问题
解答题
计算,写出计算过程
|
答案
(1)
×4 5
÷7 8 7 10
=
×4 5
×7 8 10 7
=1;
(2)
×1 2
+1 6
÷5 12 1 2
=
+1 12
×25 12
=
+1 12 5 6
=
;11 12
(3)
÷(3-1 4
-7 13
)6 13
=
÷[3-(1 4
+7 13
)]6 13
=
÷[3-1]1 4
=
;1 8
(4)
÷[(8 9
-5 6
)÷2 3
]1 4
=
÷[8 9
×4]1 6
=
÷8 9 2 3
=
×8 9 3 2
=
;4 3
(5)
x=1 15
×7 20 4 7
x=1 15 1 5
x×15=1 15
×151 5
x=3.